During the “D/E” Rendezvous Mission Techniques meeting of April 15, we spent a lot of time discussing the data transmitted from the ground to the spacecraft involving the CSI and CDH maneuvers. This discussion, of course, centered on how the data should be used and led to a tentative conclusion regarding the backup of these…
Category: Apollo 9
D Mission LM PGNCS IMU drift checks
This memo is to backup a telephone conversation with Will Fenner. I hope it doesn’t just add confusion but I thought it might be worthwhile to put into writing my latest with regard to the D Mission LM PGNCS IMU alignments and gyro drift checks. I am pretty sure if limits are approached or slightly…
Notes from the MIT program development plan meeting of April 12
A few things came out of our program development plan meeting at MIT on April 12 that might be worth recording for my memory and your information….
D Rendezvous Mission Techniques
On October 4 we met to review a draft of the D Rendezvous Mission Techniques. Although we spent the entire day we didn’t get past page 3 and so it is obvious we are going to have to beef up our effort in order to get all this cleaned up. In fact, I am going…
It’s SUNDISK for Spacecraft 103
This memo is to make absolutely sure you are aware of the horrible decision we had to make, namely that we must use the SUNDISK spacecraft computer program for Command Module 103 as well as 101. Of course, I am bringing this to your special attention since it has obvious influence on how the Apollo…
“D” Rendezvous
A great many things were discussed and resolved at the July 22 “D” Rendezvous Mission Techniques meeting. They will all be fully recorded in the minutes. There were three items, however, I would like to call particular attention to at this time by this memo….
Comparison limits for rendezvous radar test on Apollo 9
Reference: Shannahan, Philip: Rendezvous radar checkout for Apollo 9, OMAB Memorandum 69-FM62-38, Feb. 20, 1969….
D Maneuver Monitoring Mission Techniques
On November 4 we had our first-and-last D Maneuver Monitoring Mission Techniques meeting. In addition to all interested MSC organizations, it was attended by MIT, NR, TRW, and GAEC. We spent the day going through all of the SPS maneuvers both docked and undocked, except for those associated with the rendezvous and the docked DPS…
AGS accelerometers may not work.
Apparently, there is a basic problem in the LM Abort Guidance System (AGS). Although it is not widely known, there is a rumor the accelerometers do not work and it is highly likely G&C Division will elect to procure the AGS accelerometers from another source. Since it is too late to obtain and incorporate them…
Comments on the AS-207/208 Preliminary Spacecraft Reference Trajectory
TRW Systems released the AS-207/208 Preliminary Spacecraft Reference Trajectory during the first week of May. This report was put together on a compressed schedule, starting from rather hastily defined mission requirements. As a result, there are a number of things about it which were recognized as being in error even before release; however, since we…